# -*- coding: utf-8 -*-
import matplotlib.pyplot as plt
import numpy as np
x = np.linspace(0, 2*np.pi, 500)
a = 6
rho = a*(1-np.sin(x))
plt.subplot(polar=True)
plt.plot(x, rho, c='r')
plt.text(0, 0, 'Love You!', color='m')
plt.show()
